     :capacity 8
     :id       "WS-LDN-2"
     :price    "£575.00 (+ 20% VAT in UK only)"
+    :soldout  true
     :topics   ["Advanced Clojure / Clojurescript concepts" "Macros" "DSL" "Channel based concurrency (CSP)" "Graphs" "Linked Data basics & queries" "Async server setup & components" "Interactive visualization" "Live coding" "SPA w/ Reactive UIs (using Reagent)" "SVG" "WebGL toolchain" "Realtime animation"]
     :shopify  {:store    "thi-ng-store.myshopify.com"
                :product  "Data visualization with Clojure, Clojurescript &amp; thi.ng (Level 2)"

                [:li "Open source toolchain setup (Eclipse, GCC, OpenOCD, ST-Link)"]
                [:li "Overview/review of important C language concepts"]
                [:li "Basic examples (clock config, timers, GPIO, 8x LED, gyroscope)"]
                [:li "Multitasking using interrupts"]
                [:li "Digital audio introduction, theory & experimentation"]
                [:li "Intro to USB device classes & file systems (play/record WAV files)"]
                [:li "Synthesizer DSP graph overview, audio/music theory, experimentation"]
                [:li "Introduction to MIDI & integrating with synthesizer"]
                [:li "Generative music composition techniques"]
                [:li "Project development / making music"]]
               [:h3 "Requirements"]
               [:p "This workshop is going to be fast paced, but intended for beginners to embedded development. Previous programming experience in Arduino/C or Processing/Java/Python etc. is desired."]
               [:p "All participants need to bring the following items:"]
               [:ul
                [:li "OSX / Linux / Windows7+ laptop"]
                [:li "Headphones"]
                [:li "USB Memory stick (MS-DOS formatted)"]
                [:li "USB OTG cable"]
                [:li "USB MIDI controller if you have one (e.g. Korg NanoKey / NanoKontrol2)"]]
               ]}])

(def prev-workshops
  [{:title    "Data visualization with Clojure(script) & thi.ng (Level 1)"

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                 :src "https://w.soundcloud.com/player/?url=https%3A//api.soundcloud.com/playlists/159061174&amp;auto_play=false&amp;hide_related=false&amp;show_comments=true&amp;show_user=true&amp;show_reposts=false&amp;visual=true"}]]
    :desc     [:div
               "This workshop is NOT related to Clojure and instead will introduce you to the exciting world of programming embedded devices outside the world of Arduino, working 'bare-metal' with the much more powerful ARM Cortex processor family, which too is used in many smart phones and other embedded & wearable devices."
               [:p " We will use the low-cost STM32F401 discovery board (included in workshop fee) featuring an 84MHz 32bit CPU w/ FPU, 256KB ROM, 64KB RAM, 2x USB, 3-axis accelerometer & gyroscope, 44.1kHz audio codec & microphone, and learn how to implement our own polyphonic & stereo MIDI synthesizer and sequencer, which you can take home later. This is not just going to be a lo-fi noise box!"]
               [:p "Commented source code scaffolding will be provided to maximize time for experimentation."]
               [:h3 "Scheduled topics"]
               [:ul
